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21 Cards in this Set
- Front
- Back
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What are the two semi independent parts of the lymphatic system?
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(1)network of lymphatic vessels
(2)Lymphoid tissues and organs that are scattered throughout the body |
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Lymph transport is aided by muscular and respiratory pumps and by
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Contraction of smooth muscle in the walls of the lymphatic vessels
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What picks up the excess tisue fluid that is leaked from the blood capillaries?
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Porous blind ended lymphatic capilaries
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what two ducts allow the lymph to flow back into the vascular system?
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Right lymphatic duct
Left thorasic duct |
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what type of agranular cells are formed within the Lymph nodes
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WBCS (lymphocytes)
Phagocytcytic cells |
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what do the Agranular cells in the lymph nodes remove from the lymph before it is returned to the blood?
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Bacteria, Viruses
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Along with lymph nodes what are the other lymphoid organs in the body?
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Tonsils
Thymus Peyers patches Spleen |
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Removes the bacteria that tries to enter the digestive or respiratory tracts
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Tonsils
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Prevent bacteria in the intestine from penetrating deeper into the body
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Peyers patches
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Programming region for some of the lymphocytes of the body
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Thymus
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RBC graveyard and reservoir for blood
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Spleen
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If the fluid that is leaked out of the blood is not returned what will occur?
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Edema
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what pressures force the fluid out of the blood at the arterial ends of the capillary beds?
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Osmotic and hydrostatic pressure
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True or false
The lymphatic vessels are very porous due to the fact that one of the ends is opened much like that of a straw |
False
The walls overlap each other, forming flap like mini valves that act as one way doors opening when fluid pressure is high. |
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Where does the right lymphatic duct drain lymph from?
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Right arm, right side of the head and thorax
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Where does the thorasic duct drain lymph from?
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The rest of the body
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Lymph enters the convex side of the node through
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Afferent lymphatic vessels
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Lymph leaves the node through the _________ via the efferent lymphatic vessels.
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hilus
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Why is the flow of the lymph through the node very slow and what does that allow for?
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It slows due to fewer amount of efferent vessels than the afferent that feed it
This does however allow time for the lymphocytes and macrophagss to complete their protective fxns. |
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True or False
One lymph node is able to clean the lymph that flow through due to the slow rate of flow |
False
The lymph passses through several nodes before it cleaning process is complete |
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A setinel to protect the upper respiratory and digestive tracts from neer ending attacks of foriegn matter
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MALT
Mucosa Associated Lymphatic Tissue (tonisils, Peyers Patches) |
